Very interesting. I'm a CZ fanboy based on my one CZ experience, a CZ 75B SA that I bought new earlier this year and that has functioned as reliably as a Swiss watch. Before I bought that gun I did a ton of research on CZ, tried out a 75, and compared it with other brands and types (Browning Hi-Power, Beretta 92FS). Eventually, I decided that CZ made an outstanding product, both in terms of design and in terms of quality. The gun that I purchased has functioned perfectly and it made me a true believer.
But, obviously, even the best of them produce lemons now and then. Yours certainly is one of them. I'm sorry to hear about this but it's also an education in that I'm reminded that no one's perfect and things may seem to be, at times, too good to be true.